HD6413003RF Datasheet, PDF (355/715 Pages) Renesas Technology Corp – Microcontroller (MCU)

Figure 10-30 shows examples of the output of PWM waveforms with duty cycles of 0% and
100%. If the counter is cleared by compare match with GRB, and GRA is set to a higher value
than GRB, the duty cycle is 0%. If the counter is cleared by compare match with GRA, and GRB
is set to a higher value than GRA, the duty cycle is 100%.
TCNT value
GRB
GRA
H'0000
Counter cleared by compare match with GRB
Time
TIOCA
TCNT value
GRA
Write to GRA
Write to GRA
a. 0% duty cycle
Counter cleared by compare match with GRA
GRB
H'0000
Time
TIOCA
Write to GRB
Write to GRB
b. 100% duty cycle
Figure 10-30 PWM Mode (Example 2)
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